This national art museum holds over 141,000 works of western art, spanning from the middle ages through today. Bonus: It's completely free to visit.

Though the Library of Congress doesn't own every book ever published, it sure has most of them, with 532 miles of shelves and 115 million items, with 7,000 added each working day.

This 10-story Smithsonian Institution museum is dedicated to showcasing the African-American way of life, culture, and experiences through America's history.

One of the Smithsonian museums along the Mall, this one has more than 3 million artifacts in its collection—from gowns to locomotives—that reflect and preserve a record of America’s past.

Housed in the Old Patent Office Building, this art museum presents portraiture of prominent figures in American history, from presidents and inventors to even pop stars.

"Americas First Museum of American Art" boasts a collection of over 2,500 19th and 20th-century masters, both American and European, including Renoir, Picasso, Gauguin, Manet, OKeefe and more.

At the east end of The Mall, the Hill is home to the U.S. Capitol.

A museum of American craft art that begins with James Renwick’s architectural design of the building itself.

A Corinthian-style building where the final guardians of the Constitution deliberate.

The headquarters of the United States Department of Defense are housed in the massive Pentagon, whose five wedge-shaped sections represent the five branches of the U.S. Armed Forces.